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深层缝洞型碳酸盐岩储层定量分类与评价 ——以四川盆地安岳气田灯影组四段储层为例
徐诗雨 林 怡 杨 帆 陈 文 杨 京 何开来 曾乙洋 黎 洋 赵春妮
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作者单位:中国石油西南油气田公司勘探开发研究院
中文关键字:安岳气田 深层缝洞型储层 碳酸盐岩 定量分类评价 对应分析 贝叶斯判别分析 平面展布
英文关键字:Anyue gasfield; Deep fractured-vuggy carbonate rock; Quantitative classification and evaluation; Correspondence analysis; Bayesian discriminant analysis; Planar distribution
中文摘要:储层分类评价是对气藏储量品位进行地质综合评判的重要环节,是提交天然气探明储量的一项必要研究内容。目前, 权重分析法、灰色关联法、聚类分析法等多种方法和技术的广泛应用,使储层分类评价从定性、单一化逐步向定量、综合化发展。 深层缝洞型碳酸盐岩储集空间类型多样、孔喉结构复杂、储层非均质性强,为解决目前储层分类评价结果的多解性、模糊性、主 观性等问题,以四川盆地安岳气田上震旦统灯影组四段储层为例,基于储层地质特征及主控因素的认识,优选孔隙度、渗透率、 渗透率变异系数、泥质含量、含水饱和度、储层厚度等 6 个参数,进行储层定量分类评价。研究结果表明 :①安岳气田灯影组四 段储层可利用对应分析法直观地划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ四大类 ;②储层定量分类评价结果与单井实测产能符合率高,研究区内储 层以Ⅱ、Ⅲ类储层为主 ;③储层品质平面展布与区内构造特征、地震预测厚度、有利沉积相展布特征吻合,该分类评价结果可以 为后续勘探开发提供依据。 
英文摘要: For gas reservoirs, their classification and evaluation is not only an important part of comprehensive geological judgement on the quality, but also an essential research content for reporting proven natural-gas reserves. At present, wide application of several methods and technologies such as weight analysis, gray correlation, and cluster analysis, has gradually promoted this classification and evaluation from qualitative and simple to quantitative and complex. Because deep fractured-vuggy carbonate reservoirs are characterized by different reservoir space, complex pore-throat structure, and strong heterogeneity, it is easy to get multi-solvable, ambiguous, and subjective classification and evaluation results. So, Dengying 4 reservoirs in the Upper Sinian Dengying Formation, Anyue gasfield, Sichuan Basin, were taken as objectives. And on the basis of geological understanding, they were classified and evaluated from 6 factors including porosity, permeability, variation coefficient of permeability, shale content, water saturation and reservoir thickness. Results show that, (1) in Dengying 4 Member, Anyue gasfield, there are four reservoir types subdivided by correspondence analysis, including type I, type II, type III, and type IV; (2) the results from quantitative classification and evaluation are in good agreement with a real single-well productivity, and primarily type II and type III reservoirs are dominated in the study area; and (3) the planar distribution of the reservoir quality is consistent with the structures, the reservoir thickness predicted by seismic interpretation, and the distribution of favorable sedimentary facies in the study area. All results may provide an evidence for following exploration and development. 
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
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